I'm using the following command:
java -jar ../plantuml.jar -teps -DSMALLDIAGRAM=TRUE -pipe < class_diagram.puml > class_diagram_small.eps
And in my code I have:
!ifdef SMALLDIAGRAM
DO X
!else
DO Y
!endif
And only the else is executed.
I'm trying yo use the pipe because I want to generate two EPS documents from the same .puml file, so executing one command with the -D and setting the SMALLDIAGRAM to TRUE it would generate a small_diagram.eps and without it, would generate a diagram.eps.
PlantUML version 1.2017.20 (Mon Dec 11 17:57:05 CET 2017)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 9-Debian+0-9b181-4bpo91
Operating System: Linux
OS Version: 4.9.0-4-amd64
Default Encoding: UTF-8
Language: en
Country: US
Machine: Debian
PLANTUML_LIMIT_SIZE: 4096
Processors: 4
Max Memory: 826,277,888
Total Memory: 52,428,800
Free Memory: 45,253,920
Used Memory: 7,174,880
Thread Active Count: 1
The environment variable GRAPHVIZ_DOT has not been set
Dot executable is /usr/bin/dot
Dot version: dot - graphviz version 2.38.0 (20140413.2041)
Installation seems OK. File generation OK